import React, { Component } from 'react';
import 'fullcalendar';
import 'fullcalendar/dist/fullcalendar.min.css';
import './Calendar.css';

const $ = require('jquery');

class Calendar extends Component {
  state = {}

  componentDidMount() {
    /* initialize the external events
     -----------------------------------------------------------------*/
    /* eslint-disable-next-line camelcase */
    function init_events(ele) {
      ele.each(function each() {
        // create an Event Object (http://arshaw.com/fullcalendar/docs/event_data/Event_Object/)
        // it doesn't need to have a start or end
        const eventObject = {
          title: $.trim($(this).text()), // use the element's text as the event title
        };

        // store the Event Object in the DOM element so we can get to it later
        $(this).data('eventObject', eventObject);

        // make the event draggable using jQuery UI
        $(this).draggable({
          zIndex: 1070,
          revert: true, // will cause the event to go back to its
          revertDuration: 0, //  original position after the drag
        });
      });
    }

    init_events($('#external-events div.external-event'));

    /* initialize the calendar
     -----------------------------------------------------------------*/
    // Date for the calendar events (dummy data)
    const date = new Date();
    const d = date.getDate();


    const m = date.getMonth();


    const y = date.getFullYear();
    $(this.main).fullCalendar({
      header: {
        left: 'prev,next today',
        center: 'title',
        right: 'month,agendaWeek,agendaDay',
      },
      buttonText: {
        today: 'today',
        month: 'month',
        week: 'week',
        day: 'day',
      },
      // Random default events
      events: [
        {
          title: 'All Day Event',
          start: new Date(y, m, 1),
          backgroundColor: '#f56954', // red
          borderColor: '#f56954', // red
        },
        {
          title: 'Long Event',
          start: new Date(y, m, d - 5),
          end: new Date(y, m, d - 2),
          backgroundColor: '#f39c12', // yellow
          borderColor: '#f39c12', // yellow
        },
        {
          title: 'Meeting',
          start: new Date(y, m, d, 10, 30),
          allDay: false,
          backgroundColor: '#0073b7', // Blue
          borderColor: '#0073b7', // Blue
        },
        {
          title: 'Lunch',
          start: new Date(y, m, d, 12, 0),
          end: new Date(y, m, d, 14, 0),
          allDay: false,
          backgroundColor: '#00c0ef', // Info (aqua)
          borderColor: '#00c0ef', // Info (aqua)
        },
        {
          title: 'Birthday Party',
          start: new Date(y, m, d + 1, 19, 0),
          end: new Date(y, m, d + 1, 22, 30),
          allDay: false,
          backgroundColor: '#00a65a', // Success (green)
          borderColor: '#00a65a', // Success (green)
        },
        {
          title: 'Click for Google',
          start: new Date(y, m, 28),
          end: new Date(y, m, 29),
          url: 'http://google.com/',
          backgroundColor: '#3c8dbc', // Primary (light-blue)
          borderColor: '#3c8dbc', // Primary (light-blue)
        },
      ],
      editable: true,
      droppable: true, // this allows things to be dropped onto the calendar !!!
      drop(date2, allDay) { // this function is called when something is dropped
        // retrieve the dropped element's stored Event Object
        const originalEventObject = $(this).data('eventObject');

        // we need to copy it, so that multiple events don't have a reference to the same object
        const copiedEventObject = $.extend({}, originalEventObject);

        // assign it the date that was reported
        copiedEventObject.start = date2;
        copiedEventObject.allDay = allDay;
        copiedEventObject.backgroundColor = $(this).css('background-color');
        copiedEventObject.borderColor = $(this).css('border-color');

        // render the event on the calendar
        // the last `true` argument determines if the event "sticks" (http://arshaw.com/fullcalendar/docs/event_rendering/renderEvent/)
        $('#calendar').fullCalendar('renderEvent', copiedEventObject, true);

        // is the "remove after drop" checkbox checked?
        if ($('#drop-remove').is(':checked')) {
          // if so, remove the element from the "Draggable Events" list
          $(this).remove();
        }
      },
    });

    /* ADDING EVENTS */
    let currColor = '#3c8dbc'; // Red by default
    $('#color-chooser > li > a').click(function click(e) {
      e.preventDefault();
      // Save color
      currColor = $(this).css('color');
      // Add color effect to button
      $('#add-new-event').css({ 'background-color': currColor, 'border-color': currColor });
    });
    $('#add-new-event').click((e) => {
      e.preventDefault();
      // Get value and make sure it is not null
      const val = $('#new-event').val();
      if (val.length === 0) {
        return;
      }

      // Create events
      const event = $('<div />');
      event.css({
        'background-color': currColor,
        'border-color': currColor,
        color: '#fff',
      }).addClass('external-event');
      event.html(val);
      $('#external-events').prepend(event);

      // Add draggable funtionality
      init_events(event);

      // Remove event from text input
      $('#new-event').val('');
    });
  }

  render() {
    return (<div ref={(c) => { this.main = c; }} />);
  }
}

export default Calendar;